Computing Science at Manchester started with the Mark I, which is said to have been the first digital computer. This was followed by Mark II (Meg), sold commercially as Mercury. It appeared on May 10, 1954, and was itself succeeded by Atlas in December. To single out three of the many computing developments embodied in these three computers, the Mark I autocode, the Atlas supervisor ad the Atlas paging system are all recognised as being significant and influential steps forward.
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